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`CHARLES. 1.,.GEOHGE, OE FINDLAY, OHIO, Asselvotro THEBUOKEYErHAOTION DITOHEROOMPANLOE EINDEAY, OHIO, `a cOErOEATON OF'OHIO.v

INTERNALIrIPE-WRENOH. Y

Application mea April 21, ma serieu No. 291,606.

To allwhom150m/rg concern:l Y t Be it known that I, CHARLES L. GEORGE,

a citizen of the United States, and a resident of. Findlay,y in the county -of Hancock and State of Ohio, have inventedv a Oertainnew and useful Internal Pipe-Wrench, and I do hereby declare the followingto be a` full, clear, and exact description of the invention, such as will enable. others; skilled; in the art to which it appertains to` make zand use the same, reference being had to the accompanying drawings and'to the characters of reference marked thereon, which forma part ofv this specification. 1 f

This invention relates .to wrenches ofthe internal type for use more particularly in connection with the .turningof pipes, such, for instance, as those used in water, gasand oil ,mains and inuwhiohthepipes; arev in threaded connection i with .each other, either directly or through the medium of. a coupling collar. y y The object of 'my' invention is thefprovision of a simple` and improved. apparatus of this character which is strong, durable and inexpensive inits` construction, efficient in its operation and easy fto handle. l r .3 The invention lis fully described in the followingjspecication and while, ein.. its broader aspect, it is capable 4.of embodiment in numerous forms,` a preferred. embodiment thereof is,v illustrated in the accompanying drawings, inv which,- y l e Figurel "sa frontend elevation of an apparatus embodyin ytheinvent'ion with a part broken away.y l. *ig. Zis a ycentralllongi'- tudinal section thereof on the line IQ Qfin Fig. l with parts in; full. l*.Fig. 3 is'farview similar to Fig. 1 with'the front end' plate and clutch members assembled, and Fig-.4: is a, perspective view off one of the clutch members. A i. ii

`Referring to the drawings, 1 ldesignates the -Awrench heady which hasfits, inner end portion preferably hollowl and-provided at its outer end with an enlargement 2 which' is peripherally recessedv to provide a raceway for receiving carrying yc ,)llar` '3,v which is adaptedto loosely-,'.turn 'thereon and is provided at opposite sides with handles 4. The head l is of suitable sizeforward from the enlargement 2 to loosely project into a,v pipe end of a size for which it is adapted,

and the forward end portion of the yhead is speeifieation f Letters Patent.

Patented Aug. 19, 1919.

provided with the extension 5, `which is vpreferably, but not necessarily, reduced in diameter relative` thereto.

TheV extension V5 is provided 'with ak plu-' rality of equidistantly spacedperipheral re-4 cesses 6, which areopen at their outer ends and are circular in. cross-section with the outer peripheral sides thereof open, as shown.4 rllhe outeropen side of each recess 6` constitutes less than half of va circle-.so that a circular member inserted endwise` into a recess and substantially iitting the same for loose turning movements therein isl preventedlfrom outward radial movements due to the wall of the recess constituting Amore than halfofa circle,as is apparent.

Mounted ineach recess 6 is a cylindrical clutch member 7, the diameter of which is substantially that of the recess so as to turn freelyltherein but not to have undue lateral play. The outer peripheral sides of the clutch members proj ect beyondy theV peripheral line of the extension 5 and to near the peripheral lineof the body portion of the head, and each member is provided on its outer side with a clutchjaw 8A which is set partiallyinto a recess or lseat formedkin the yperiphery of the member." This jaw has its outer surface preferably serrated or provided withfclutch teeth andis normally disposed at one'side of thek side opening ofthe recess in which osition its clutch surface projects only sligllitly beyond the peripheral surface of vthe body` portion of the head l. It evident, however, thatupon a turning of a clutchmember 7 to the left, or toward the'centerof the side opening of its recess 6, asr shown in Fig. 3, the clutch jaw 8 will have an outward camming actionso as to effect a tighteningthe'reof against` the inner surface of a pipe in which the end of the headis disposed, due to the aXis of the clutch member being offset with' respect to the axis of the head and pipe in'which inserted.

The clutch ymember 7 is normally held in chored in the inner end of the'socket to ,resist a.: turning of lthe springwithin the socket. andthe vother end thereof 'being pro- `jected transversely to the outer end of the head and in side thrust engagement with a stud 11 lprojecting outward axially frein the head extension 5. The turning movemerit of 'the @Intell members 7' from firmes-r1 or released 'position is reverse to theintended pipe turning or driving movement of the head so that the frictioiial ieiction of the clutch jaw 8 with the Wall o f,a lpipe in 'which disposed "when the head lisy sov 7, thereby retaining 'ftllem 'in vthe 'seekers A6, and also covers the oute'r laterally extended ends ofthe springs 9.

The Wrench is adapted for useleitlier es a right or left wrench'by I'n'erely xreversing the clutch member 7 end for end, inthe recesses 6, yand shifting the springs-9 from onefend tothe other of "thefin'enibers 'which are provided with a 'recess 10 in v"eacheid thereof.

E The head 1 is yprovided at opposite sides of its rear end ,tvith perforated lugs lefto- Which any v`suitablepovver means may berattached.

I Wish it understood that my invention is not limited to v"specific censtructin, arrangement or form vof theQpartS', but 'is capable of numerous inodifications and changes Without 'departing from Ethe' :spirit of the claims.

Havingthus described my invention, what I claim as new and desire to 'sefliire byLet-l ters Patent, is,'-

1. A wrench head adapted for 'projection into ia pipe end, said head 'having a lperipheral recess, a yclutch 'member mounted for rockingfmovements in' said recess A'aboiit an axis which is oEsetrelativetdthe head axis, saidinemberfhavinqa ellitehl surface vvhich is projected outward into tightening clutch engagement With'an encircling pipe when the'cluteh member-is vrocked-in one direction relative to the head. Y

2. 'A Wrench head adapted forprojectin into a ypipe end, said heady having a peripheral recess, a clutch Vmember.mounted for rocking movements in said vrecess'"aboiit an aXis which is offset relativetothe head axis, said member havingr a clutchslirfacewhich projected outwardintdtightening clutch engagement Wi th 'an encircling; pipe when the Clutch ymember ris jrcked in" one direction relative Ytov the `head, means acting on the clutch member'to normally retain iny released position relative -to the head.

3, ln a Wrench ofthe class described, a

`heedldapted "fr prejeetien into pipe, Asaidllead *liav'irg "ciretilai Vreeess in its periphery with the recess aXis parallel to thelie-d'akis and With the side peripheral openingpf the recess of less Width than the 'eessdiaiieten a cylindrical cluteh'member rotatably -`mounted `in said recess and having a clutch surface projecting Without the recess opening and adapted `to' have iniv ard and'outvvard yinlovements lrelativel to' the head -ax'is AWl1'en`5the clutch member is rotated'in its recess, "and means'normfilly'retaining the cli'itch 'member in one "position of its movement in fthe head recess.

'4a In fa Wrench-of vthe-class described, fa head adapted for projection into a pipe, a c'lut'eh illember 'mounted in "a side portion of said 'head for 'rotary moveinents relative thereto 'about an 1afXis 4Which lis 'parallel vto andoseefroin ltllefheadlrxis, said y'lnennfber having aelitchfsurfaee yadapted to beprojected a greater or-less'distan'ce Without'the periphery fthe'head bye 'relative turning (if tlienielber and head, 'and -lS'aid lieinber havingf-anaXialsoeket in an endftl'rer'eof, a 'coiled tension :spring ins'aid lsockethaving one1 endfiiie'd to themeiliber tor'esist a; turn* ing ofthe springltherein vand havingfits 'other lend projected Withe'ut the member transversely thereof and in side'tlirustr'con# taetwith a part 4of the 'head te resist a. turning f i the` clutch' member from n'or'mal position. f

5.*11'1 Va Wiech of'tle'elas's d'escriberha head having an end 'pertirjn adapted to be -projeete'dintoa pipeiai'iidfprovided in the 'ofte'r l end 'tl'leref' with 'a plurality of ciru'ler 'recesses v-yvitllftheir' axes parallel to' the head axis and withal portion' 'of i theiry outer sidesfvvhich'is less tlianbne=llalf of a circle, open peripherally of "the head, ycylindrical clutch members aclaptedte beinserted and;

Wisefinto sa'id `'recesses 'and :having cinte-h sirfacesfprojected through the sideop'eningsthereof 'and adapted for relative 'rocki'il'g' moyeinents therein bycircu'lar mo've- Il'ents f nthe"members inthe' recesses, thel clutch 'srfacesf being moved outward: relative'to the head"axis 'villen themembersare turned from normalpositiommeans retaining` the members' in normal position relative to the'head, andmeans secured to theoter end 'of thefhead andretaining said members inthe head recesses. v

'In' testimony f'vvher'eof, I have hereunto my name this specification.

CHARLES vLf' GEORGE. 

